People fail to realize that this is about the pre-production mark for a normal Saban era season.
Example: 2000; Lightspeed is airing, Timeranger is airing. June/July we get Time Force information at the NYC product show. Casting news in late summer/early fall. Production starts in Oct/Nov. Begins airing in Feb.
So yeah, Goseiger adapt would need to burn the midnight oil and get going kinda hard to catch up, but they wouldn't be that far behind.
While Shinkenger could arguably be the smarter choice. i.e. time passed between Ryuki and Dragon Knight. However if they were looking to get back into the swing of things with the old schedule, it would be Gosei.